An efficient mechanism for enhancing the thermoelectricity of nanoribbons by blocking phonon transport in 2d materials
文献类型:期刊论文
作者 | Liu,Yue-Yang1,2; Zeng,Yu-Jia1; Jia,Pin-Zhen1; Cao,Xuan-Hao1; Jiang,Xiangwei2; Chen,Ke-Qiu1 |
刊名 | Journal of physics: condensed matter |
出版日期 | 2018-06-13 |
卷号 | 30期号:27 |
ISSN号 | 0953-8984 |
关键词 | Thermoelectric effects Phonons in mos2 Nanoribbons Thermal transport |
DOI | 10.1088/1361-648x/aac7f5 |
英文摘要 | Abstract inspired by the novel mechanism of reducing thermal conductivity by local phonon resonance instead of by inducing structural defects, we investigate the effect of side branching on the thermoelectric properties of nanoribbons, and prove that side branching is a highly efficient mechanism for enhancing the thermoelectricity of different kinds of nanoribbons. for both armchair and zigzag nanoribbons, the side branches result in not only significant blocking of phonon transport but also notable increase of the seebeck coefficient. consequently, the thermoelectric figure of merit of the armchair nanoribbon is boosted from 0.72 to as high as 1.93, and the originally non-thermoelectric metallic zigzag nanoribbon is turned into a thermoelectric material due to the appearance of the band gap induced by the side branches. these results mean that the mechanism of branching is not only very efficient, but also takes effect regardless of the original properties of the nanoribbons, and thus will hold great promise for its application in the thermoelectric field. |
语种 | 英语 |
出版者 | IOP Publishing |
WOS记录号 | IOP:0953-8984-30-27-AAC7F5 |
URI标识 | http://www.irgrid.ac.cn/handle/1471x/2429476 |
专题 | 半导体研究所 |
作者单位 | 1.Department of Applied Physics, School of Physics and Electronics, Hunan University, Changsha 410082, People’s Republic of China 2.Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China |
推荐引用方式 GB/T 7714 | Liu,Yue-Yang,Zeng,Yu-Jia,Jia,Pin-Zhen,et al. An efficient mechanism for enhancing the thermoelectricity of nanoribbons by blocking phonon transport in 2d materials[J]. Journal of physics: condensed matter,2018,30(27). |
APA | Liu,Yue-Yang,Zeng,Yu-Jia,Jia,Pin-Zhen,Cao,Xuan-Hao,Jiang,Xiangwei,&Chen,Ke-Qiu.(2018).An efficient mechanism for enhancing the thermoelectricity of nanoribbons by blocking phonon transport in 2d materials.Journal of physics: condensed matter,30(27). |
MLA | Liu,Yue-Yang,et al."An efficient mechanism for enhancing the thermoelectricity of nanoribbons by blocking phonon transport in 2d materials".Journal of physics: condensed matter 30.27(2018). |
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来源:半导体研究所
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